FR1532760A - Automatic recording installation for precision instrument for measuring angles or lengths - Google Patents

Automatic recording installation for precision instrument for measuring angles or lengths

Info

Publication number
FR1532760A
FR1532760A FR8941A FR67008941A FR1532760A FR 1532760 A FR1532760 A FR 1532760A FR 8941 A FR8941 A FR 8941A FR 67008941 A FR67008941 A FR 67008941A FR 1532760 A FR1532760 A FR 1532760A
Authority
FR
France
Prior art keywords
lengths
automatic recording
precision instrument
measuring angles
recording installation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR8941A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leica Aarau AG
Original Assignee
Kern and Co AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kern and Co AG filed Critical Kern and Co AG
Application granted granted Critical
Publication of FR1532760A publication Critical patent/FR1532760A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/14—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit
    • H03M1/16—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit with scale factor modification, i.e. by changing the amplification between the steps
    • H03M1/161—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit with scale factor modification, i.e. by changing the amplification between the steps in pattern-reading type converters, e.g. with gearings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
    • G01D5/34707—Scales; Discs, e.g. fixation, fabrication, compensation
    • G01D5/34715—Scale reading or illumination devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/22—Analogue/digital converters pattern-reading type
    • H03M1/24—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip
    • H03M1/26—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with weighted coding, i.e. the weight given to a digit depends on the position of the digit within the block or code word, e.g. there is a given radix and the weights are powers of this radix
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/22—Analogue/digital converters pattern-reading type
    • H03M1/24—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip
    • H03M1/28—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding
    • H03M1/30—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding incremental
    • H03M1/308—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding incremental with additional pattern means for determining the absolute position, e.g. reference marks

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Length Measuring Devices By Optical Means (AREA)
FR8941A 1966-07-23 1967-07-21 Automatic recording installation for precision instrument for measuring angles or lengths Expired FR1532760A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1075266A CH444508A (en) 1966-07-23 1966-07-23 Automatic registration device on a precision angle or length measuring instrument

Publications (1)

Publication Number Publication Date
FR1532760A true FR1532760A (en) 1968-07-12

Family

ID=4366450

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8941A Expired FR1532760A (en) 1966-07-23 1967-07-21 Automatic recording installation for precision instrument for measuring angles or lengths

Country Status (4)

Country Link
US (1) US3512006A (en)
CH (1) CH444508A (en)
FR (1) FR1532760A (en)
GB (1) GB1198517A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818224A (en) * 1973-01-02 1974-06-18 Copar Corp Measurement system
US4143267A (en) * 1977-12-23 1979-03-06 Johnson Lonnie G Digital distance measuring instrument
DD297701B5 (en) * 1990-09-07 1993-09-23 Carl Zeiss Jena Gmbh Zentralbe METHOD OF MEASURING LENGTH
FR2779816B1 (en) * 1998-06-10 2001-04-13 Codechamp OPTICAL ENCODER
US10859363B2 (en) * 2017-09-27 2020-12-08 Stanley Black & Decker, Inc. Tape rule assembly with linear optical encoder for sensing human-readable graduations of length

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2870671A (en) * 1955-08-30 1959-01-27 Oscar R Falconi Autocollimator for measuring angle of incident light beam
US2993200A (en) * 1960-05-23 1961-07-18 Gen Precision Inc Vernier

Also Published As

Publication number Publication date
US3512006A (en) 1970-05-12
CH444508A (en) 1967-09-30
GB1198517A (en) 1970-07-15

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